dxSudoku #111 Improved Brute Force (IBF) - SE 11.9 - Beyond Hell Level

List of all dxSudoku videos:    / @dxsudokuchannel   In this video an improved way of doing the brute force puzzle-solving technique is demonstrated on a Sudoku puzzle having an SE level of 11.9. This is the hardest puzzle I've been able to find.